Warmups: number of ignored values at the beginning of a benchmark. The number
is chosen to ignore first values were are usually much higher than the mean
of the “steady state”

Run: execution of one worker processes which computed values. In this
analysis, each worker process computed exactly 250 values.

Example: a result with 10 runs, 8 values, 0 warmups and 250 values means that
the benchmark function was called 10x8x250 = 20,000 times in total, and 8x250 =
2,000 times per process, but the result only contains 10x250 = 2,500 values in
total (or 250 values per process) since values are average time per loop
iteration.